2021 Niner Bikes RLT 9 Steel 4-Star Shimano GRX 800 2X

Design
Drop Bar, Rigid, non-suspension corrected
Frame
Steel
Fork
Carbon/Composite
Features
Disc brake, Single-speed capable
Average stack and reachvs category
Somewhat upright stack and reachvs category
Somewhat upright stack and reachvs category
Somewhat upright stack and reachvs category
Average stack and reachvs category
Average stack and reachvs category

Geometry

47cm
50cm
53cm
56cm
59cm
62cm
Stack
543mm
558mm
579mm
597mm
615mm
636mm
Reach
365mm
367mm
375mm
384mm
398mm
406mm
Stack to Reach Ratio
1.49:1
1.52:1
1.54:1
1.55:1
1.55:1
1.57:1
Seat Tube Length, Unknown
470mm
500mm
530mm
560mm
590mm
620mm
Top Tube Length, Effective/Horizontal Unknown
510mm
525mm
545mm
565mm
585mm
605mm
Top Tube Slope
10.4deg
8.7deg
7.7deg
6.4deg
5.1deg
4.3deg
Head Tube Angle
70deg
70.5deg
71deg
71.5deg
72deg
72.5deg
Seat Tube Angle
74.5deg
74deg
73.5deg
73deg
73deg
72.5deg
Head Tube Length
110mm
125mm
145mm
165mm
185mm
205mm
Bottom Bracket Drop
75mm
75mm
75mm
70mm
70mm
70mm
Bottom Bracket Height
281mm
281mm
281mm
286mm
286mm
286mm
Chainstay Length
435mm
435mm
435mm
435mm
435mm
435mm
Chainstay Length Horizontal
428.5mm
428.5mm
428.5mm
429.3mm
429.3mm
429.3mm
Front-Center
583mm
589mm
600mm
611mm
626mm
635mm
Front-Center Horizontal
579.5mm
586.5mm
596.5mm
608.7mm
623.7mm
632.7mm
Wheelbase
1008mm
1015mm
1025mm
1038mm
1053mm
1062mm
Fork Offset/Rake
45mm
45mm
45mm
45mm
45mm
45mm
Trail
81.7mm
very high
78.3mm
high
75mm
high
71.7mm
high
68.4mm
high
65.1mm
high
Mechanical Trail
76.8mm
73.8mm
70.9mm
68mm
65mm
62.1mm
Wheel Flop
26.3mm
24.7mm
23.1mm
21.6mm
20.1mm
18.7mm
Standover Height
735mm
757mm
781mm
809mm
835mm
860mm
Tire to Pedal Spindle
57mm
170 mm cranks
63mm
170 mm cranks
74mm
170 mm cranks
85mm
170 mm cranks
100mm
170 mm cranks
109mm
170 mm cranks
Pedal Spindle to Ground Clearance
111mm
170 mm cranks
111mm
170 mm cranks
111mm
170 mm cranks
116mm
170 mm cranks
116mm
170 mm cranks
116mm
170 mm cranks

4-Star Shimano GRX 800 2X Build

47cm
50cm
53cm
56cm
59cm
62cm
Wheel Size
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
Tire Width
45mm
45mm
45mm
45mm
45mm
45mm
Tire Width Max
50mm
50mm
50mm
50mm
50mm
50mm
Tire Outer Diameter
712mm
712mm
712mm
712mm
712mm
712mm
Bike Length with Tires
1720mm
1727mm
1737mm
1750mm
1765mm
1774mm
Handlebar Width
44mm
44mm
44mm
44mm
44mm
44mm
Stem Length
90mm
90mm
90mm
90mm
90mm
90mm
Stem Angle
6deg
6deg
6deg
6deg
6deg
6deg

Published Sizing Recommendations

Height
4 ft 11 in
to
5 ft 3 in
5 ft 2 in
to
5 ft 6 in
5 ft 5 in
to
5 ft 9 in
5 ft 8 in
to
6 ft 0 in
5 ft 11 in
to
6 ft 3 in
6 ft 2 in
to
6 ft 6 in

Stack and Reach vs. Category Trend

Very Upright
Somewhat Upright
Average
Somewhat Aggressive
Very Aggressive

The Bike Insights Upright/Aggressive scale is based on analysis of a bike’s proportions relative to similar sized bikes in the same category.

Learn more about the Upright/Aggressive Scale
Category Trend
All-road/Gravel
Source:https://www.ninerbikes.com/products/rlt-9-steel/